Problem with HD

A 233.8 GB Maxtor HD devoted totally to media started giving me problems three weeks ago. Files in the directory would disapear one by one while I was trying to open them until, the hard drive itself unmounted. The apple store re-mounted the hardrive using disk warrior. Yesterday, basically the same symptons re-appeared. In disk utility I cannot verify the disk, "The underlying task reported failure on exit." Anybody out there have any comments. Thanks-a-bunch

I have two new Western Digital WD Caviar 200 GB hard drives; I bought them to put in two firewire 400 external enclosures. Previosuly, I had a Western Digital 120 GB hard disks in each of these FireWire400 enclosures.

I cannot get the 200 GB hard disks to mount when installed in the firewire enclosures.

Steps I took:

- removed my 1GHz G4 Powermac's internal drives
- installed the two 200 GB HDs in the G4
- booted from Panther Install Disc 1, ran Disk Utility
- the drives show up:I formatted them without ANY difficulty
- put the G4 1GHz Powermac 200 GB HD in my external Firewire 400 enclosure
- the 200 GB HD will not mount
- it WILL show up in Disk Utility after a several minutes of scanning
- running verify at this point results in this error:
Error: The underlying task reported failure on exit (-9972)

I have no idea what could be wrong. Why would the drives show up when installed internally but not when installed in the firewire cases?

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